Results 41 to 50 of about 28,704 (278)

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

The correlation of the values of plant-avalilable Pb and Cd in soil determined using different types of extragens [PDF]

Journal of the Serbian Chemical Society, 2004
The plant-available amount of Pb and Cd in soil was determined by extraction using the solutions: 1) 0.5 M Na2EDTA, pH 5.2; 2) 1 M KCl, pH 7.0; 3) 0.1 M KCl, 0.05 M Na2EDTA, pH 6.2; 4) 2 % CH3COOH, pH 2.5 and 5) 1 M CH3COONH4, pH 4.8.
DRAGAN MARKOVIC, DRAGAN VESELINOVIC, ANKICA SAVIN   +2 more
doaj  

A Method to Accelerate the Convergence of Satellite Clock Offset Estimation Considering the Time-Varying Code Biases

Remote Sensing, 2021
Continuous and stable precision satellite clock offsets are an important guarantee for real-time precise point positioning (PPP). However, in real-time PPP, the estimation of a satellite clock is often interrupted for various reasons such as network ...
Shuai Liu, Yunbin Yuan
doaj   +1 more source

Unveiling the interplay: comparing solvent extraction, structure, and stability constants in a phenanthroline diamide system with trivalent lanthanides

Dalton Transactions
Phenanthroline diamide ligands have shown promise as extractants for the selective separation of the An( iii ) from the Ln( iii ) in used nuclear fuel recycling.
Emma M. Archer, Correy R. Vigil, Shane S. Galley, Jessica A. Jackson, Jenifer C. Shafer   +4 more
openaire   +2 more sources

The Synergistic Effect in Solvent Extraction—The Correlation of the Ionic Radius of Rare Earth Elements with the Stability Constants of Rare Earth Benzoyltrifluoroacetonate Adducts with n-Hexyl Alcohol, TBP and TOPO [PDF]

Bulletin of the Chemical Society of Japan, 1967
Abstract The synergistic effects of n-hexyl alcohol, TBP and TOPO on the extraction of rare earth ions with benzoyltrifluoroacetone in benzene have been studied. The stability constants of the adducts were determined by means of the curve-fitting method.
Tsunenobu Shigematsu, Masayuki Tabushi, Masakazu Matsui, Takaharu Honjyo   +3 more
openaire   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Solvent Extraction of Calcium and Strontium into Nitrobenzene by Using a Synergistic Mixture of Hydrogen Dicarbollylcobaltate and Bis(Diphenylphosphino)Methane Dioxide

Acta Chimica Slovenica, 2013
Extraction of microamounts of calcium and strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H+B-) in the presence of bis(diphenylphosphino)methane dioxide (DPPMDO, L) has been investigated.
Emanuel Makrlík, Zdenek Spíchal, Petr Vanura, Pavel Selucký   +3 more
doaj  

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source

Studies on the Sulfur-containing Chelating Agents. XXXIV. Determination of Stability Constant of Mercury Complex of Monothiodibenzoylmethane and Monothiothenoyltrifluoroacetone by Solvent Extraction Method

Chemical and Pharmaceutical Bulletin, 1972
Stability constants and extraction constants of mercury complexes of monothiodibenzoylmethane (SBB) and monothiothenoyltrifluoroacetone (STTA) were determined by the solvent extraction method in the presence of cyanide ion as the auxiliary complexing agent. Chloroform was used as the solvent. These values were compared with those of mercury dithizonate.
YOKOYAMA, AKIRA, NAKANISHI, NOBUKO, TANAKA, HISASHI   +2 more
openaire   +2 more sources

RNA‐related functions of BRCA2 in transcription, replication, and genome stability

FEBS Letters, EarlyView.
Beyond its role in homologous recombination, BRCA2 regulates R‐loop homeostasis, DNA–RNA hybrid resolution, RNA polymerase II dynamics, and transcriptional activation. Disruption of any of these functions can contribute to genome instability, inflammatory signaling, and tumorigenesis. BRCA2 is a central tumor suppressor protein best known for its roles
Lucia Alvaro‐Aranda, Sreerama Chaitanya Sridhara, Aura Carreira   +2 more
wiley   +1 more source